ade7169f16 Analog Devices, Inc., ade7169f16 Datasheet - Page 111

• Manufacturer Part Number: ade7169f16
• Description: Single-phase Energy Measurement Ic With 8052 Mcu, Rtc And Lcd Driver
• Manufacturer: Analog Devices, Inc.

Preliminary Technical Data
RTC - REAL TIME CLOCK
The ADE7169F16 has an embedded Real Time Clock (RTC) – see Figure 75. The external 32.768 kHz crystal is used as the clock source
for the RTC. Calibration is provided to compensate the nominal crystal frequency and for variations in the external crystal frequency over
temperature. By default, the RTC is maintained active in all the Power Saving Modes. The RTC counters retain their values through
watchdog resets and external resets and are only reset during a power on reset.
RTC SFR REGISTER LIST
SFR
TIMECON
HTHSEC
SEC
MIN
HOUR
INTVAL
RTCCOMP
Address
0xA1
0xA2
0xA3
0xA4
0xA5
0xA6
0xF6
Bit Addressable
No
No
No
No
No
No
No
CALIBRATED
32.768kHz
32.768kHz
CRYSTAL
RTCEN
RTC configuration
Hundred
Seconds counter
Minutes counter
Hours counter
Alarm interval
RTC nominal compensation
Description
RTCCOMP
CALIBRATION
HUNDREDTHS COUNTER
INTERVAL COUNTER
SECOND COUNTER
MINUTE COUNTER
HOUR COUNTER
th
PRESCALER
INTVAL SFR
Figure 75: RTC implementation
of a second counter
Rev. PrD | Page 111 of 140
HOUR
TEMPCAL
8-BIT
HTHSEC
8-BIT
SEC
MIN
EQUAL?
MIDNIGHT EVENT
SELECTION
ITS1 ITS0
TIMEBASE
INTERVAL
MUX
ALARM EVENT
ITEN
ADE7169F16